do contexto apresentado no cap´ıtulo 2 (sistemas distribu´ıdos em ambientes m´oveis) e com os resultados dos testes obtidos podemos assumir que a defini¸c˜ao do modelo proposto ´e realiz´avel e pr´atico. A seguran¸ca proporcionada pelo modelo herda alguns mecanismos de seguran¸ca da tecnologia Java o que facilitou a sua implementa¸c˜ao. Os testes realizados em rede celular 3G e rede ad hoc 802.11 apresentam resultados satisfat´orios que permitem julgar a pertinˆencia do modelo proposto.
7.2
Proposta de Continuidade
A arquitetura do framework desenvolvido apresenta uma facilidade de expans˜ao (es- calabilidade), a sua implementa¸c˜ao usa o paradigma de Orienta¸c˜ao a Objeto, portanto, novos servi¸cos de seguran¸ca podem ser desenvolvidos e acrescidos futuramente. Pode se pensar em algumas facilidades especificas para sistemas e-sa´ude como prevˆe a OMG no modelo CORBA. O servi¸co de privacidade implementado neste trabalho ´e limitado a uma gerˆencia de t´ıquetes distribu´ıdos pelo GRSec. Poderia se pensar em uma garantia de privacidade muito mais abrangente.
8
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